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23rd February 2005, 04:14 PM
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diyAudio Member
Join Date: Nov 2004
Location: tampere
  
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Help needed for active filter
Hello
I designed active filter for my subwoofer and have two probmles with it. When i turn phase potentiometer (100k) amplitude drops and as far as i know it should not do that. Even bigger problem is that when i turn phase switch (text PHASE SWITCH between two pads) opamp starts to oscillate with frequency of 1,5Mhz. Could someone smarter check schema if there is some kind of mistake that i don`t see. Please help beginner. |
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